Tool driving or impacting – Drive controlled by relative axial movement of tool – Drive motor controlled
Patent
1994-02-17
1995-04-04
Smith, Scott A.
Tool driving or impacting
Drive controlled by relative axial movement of tool
Drive motor controlled
173 73, 173 78, 173 80, E21B 414
Patent
active
054028540
ABSTRACT:
A fluid distributor for a debris flushing system in a fluid-activated jackhammer includes a bore through a reciprocal piston, for fluid flow into an exhaust chamber, a fluid distributor removably mounted in the piston bore, the fluid distributor operating by forming passageways through the bore and blocking flow in other portions of the bore. The distributor can have a tapered body that can be severed along its length by the operator to provide a plurality of preselected, fixed flow rates.
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Emerson Duane K.
Holland Richard S.
Kimberlin Robert R.
Ingersoll-Rand Company
Selko John J.
Smith Scott A.
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